Seiko Cal. 5612 - 891

The 5612-891 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5612 caliber with 30j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-a4065ca1039a]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1979

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